Science | Technology | Engineering | Mathematics

We know that girls often hit barriers in STEM disciplines due to a gender gap and societal expectations. However, in an all-girls learning environment, there are no stereotypes about what girls like or where they can excel. We believe that all girls benefit from a solid foundation in math, science and engineering. Our curriculum also includes computer science and computational thinking.

Research Shows...

Research by the National Coalition of Girls’ Schools shows that all-girls learning environments champion the educational needs of girls as a group currently underrepresented in STEM majors and careers.

Graduates of girls’ schools are six times more likely to consider majoring in math, science, and technology and three times more likely to consider engineering compared to girls who attended coed schools.

Compared to coed peers, girls’ school grads are 3 times more likely to consider engineering careers.

Read more about the All-Girls Advantage at the National Coalition of Girls’ Schools website.

Best Private Online High School | All Girls Private School | Student in STEM Lab

STEM at Bryn Mawr

Our program encourages girls to explore their interests and passions, whether directly in STEM fields or by using technology to engage in real-world problem solving on campus, in the community and around the world. When you combine strong mentors, reduced gender stereotyping in curriculum and classroom, and abundant learning opportunities, the results are clear.


23 Students participated in the first ever Quantum Computing Course led by MIT and Oxford


A group of students was one of 26 teams in the United States to reach the semi-finalist round of Technovation: a competition to develop technology entrepreneurs and leaders.

More than 30 students have earned a Certificate in Social Entrepreneurship from the University of Pennsylvania through our Social Innovators Program.


AP Computer Science Female Diversity Award in 2018, 2019, 2020, and 2021.

Meet Mallory Pladus

English Teacher

Where do you live?
Lancaster, Pennsylvania

What do you like about teaching online?
I like the small school environment, the ambitious students BMOS attracts, and the flexibility learning and teaching online affords students and faculty.

What do you like to do when you’re NOT in school?
Hike, travel, play frisbee, and spend time on the Jersey Shore.

If you could travel anywhere in the world, where would you go?
Japan. My dad is half Japanese, and there is a rumor in our family that he and my aunt relinquished property rights to a small portion of a mountain in Japan. I’d like to go see that mountain.

Best way to spend a Saturday?
Reading outside.

What do you want students to remember about you?
I want them to remember that I did my best to make literature open up for them in surprising, intriguing ways and that I cared about their ideas.

Personal catchphrase?
“Let’s reflect on this.”

Who inspires you?
Writers I love: James Baldwin, Marilynne Robinson, Louise Erdrich, to name a few.

What activity/class have you enjoyed the most through BMOS (and why)?
The poet Sarah Ali visited our English 9 and 10 classes to discuss her poem about animal roadkill. The students asked great questions, and she gave thoughtful answers. We broached a topic that often feels too intractable to talk about.